(哈尔滨工业大学 材料科学与工程学院， 哈尔滨 150001)
摘 要: 近年来对共晶合金共生(耦合)生长形态稳定性的研究取得了一系列重要的成果。 这些成果主要包括： 片层共晶共生生长在最小过冷度下的超稳定性、 片层共晶共生生长的Z字形分叉、 熔体流动及非线性动力学对共生生长形态稳定性的影响等。 在此基础上人们又开始关注包晶合金定向凝固中的稳态共生生长及其形态稳定性。 综述了这些研究成果， 并对其发展方向进行了探讨。
关键字: 共晶合金； 包晶合金； 共生生长； 形态稳定性
（School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China）
Abstract: The achievements of recent extensive experimental and theoretical researches on the morphological instabilities of eutectic and peritectic coupled growth were reviewed. The predominant findings are: the overstability below the minimum undercooling spacing of eutectic coupled growth, zigzag bifurcation in bulk lamellar eutectic coupled growth, influences of fluxion in melts and nonlinear dynamics upon the morphological instabilities of coupled growth, and morphological stability of isothermal and non-isothermal peritectic coupled growth, and the similarities and differences between peritectic and eutectic coupled growth. The prospective directions of morphological stability of coupled growth were discussed.
Key words: eutectic alloy; peritectic alloy; coupled growth; morphological stability
